Professional installers have the training and experience required to ensure that your a/c system is mounted appropriately, safely, and successfully. https://my.sterling.edu/ICS/Academics/LL/LL379__UG12/FA_2012_UNDG-LL379__UG12_-A/Collaboration.jnz?portlet=Forums&screen=PostView&screenType=change&id=660e7dec-be41-48c1-aef0-565cd873b963